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CVE-2018-25235

6.2 · MEDIUM

NetworkActiv Web Server 4.0 contains a buffer overflow vulnerability in the username field of the Security options that allows local attackers to crash the application by supplying an excessively l…

Published Mar 30, 2026networkactivCWE-787EPSS 0.22%

Overview

CVE-2018-25235 is a medium-severity vulnerability affecting networkactiv web_server. It was published on March 30, 2026 and has a CVSS 3.1 base score of 6.2 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 6.2, rated MEDIUM. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical description

NetworkActiv Web Server 4.0 contains a buffer overflow vulnerability in the username field of the Security options that allows local attackers to crash the application by supplying an excessively long string. Attackers can trigger a denial of service by entering a crafted username value exceeding the expected buffer size through the Set username interface.

Remediation

Check the references section for vendor advisories and patches from networkactiv. Update web_server to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus
networkactivweb_server>= 0, < 4.0Affected

References

Refwww.exploit-db.com/exploits/45302Refwww.networkactiv.com/Dev/Refwww.networkactiv.com/WebServer.htmlRefwww.vulncheck.com/advisories/networkactiv-web-server-username-field-buffer-overflow-dos

How CyberStrike helps

Frequently asked questions

What is CVE-2018-25235?

CVE-2018-25235 is a medium-severity vulnerability affecting networkactiv web_server. It was published on March 30, 2026 and has a CVSS 3.1 base score of 6.2 (MEDIUM).

How severe is CVE-2018-25235?

This vulnerability has a CVSS 3.1 base score of 6.2, rated MEDIUM. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2018-25235?

Check the references section for vendor advisories and patches from networkactiv. Update web_server to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2018-25235?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2018-25235 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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